callback in android?

Question

in android application development, i frequently go through the word "CALLBACK" in many places. i want to know want it means to tell us technically. and how i can manage the callback of the applications. i would need a guidance to understand about it....

Answer 1

i want to know want it means to tell us technically

http://en.wikipedia.org/wiki/Callback_%28computer_science%29

"In object-oriented programming languages without function-valued arguments, such as Java, [callbacks] can be simulated by passing an abstract class or interface, of which the receiver will call one or more methods, while the calling end provides a concrete implementation. Such objects are effectively a bundle of callbacks, plus the data they need to manipulate. They are useful in implementing various design patterns such as Visitor, Observer, and Strategy."

how i can manage the callback of the applications

I have no idea what this means.

Answer 2

Here's how to do callbacks:

http://www.javaworld.com/javaworld/javatips/jw-javatip10.html